Available for Windows Phone 8.1 and Windows 8.1, fanband is an app that allows you to customize the theme of your Microsoft Band with your favorite TV show, video game, sports team and more. The app now boasts over 1000 themes, and is celebrating by slashing its price on the Windows Store to $1.49 (from the usual $1.99). Fanband is also giving away the Xbox Gamer theme, which normally costs $0.99, for free.